Dataset Edition

Présentation générale
Nom du jeu de donnéesFalcon MPI-C C-ToF-AMS
Créé le2019-02-06
Projet(s)DACCIWA > WP3 - Atmospheric Chemistry
DACCIWA > WP4 - Cloud-Aerosol Interactions
Date de début (yyyy-mm-dd)2016-06-29Date de fin (yyyy-mm-dd)2016-07-14
Contact(s)
Accès aux données Dataset as provided by the Principal Investigator
History

UPDATE2019-03-01
New version of data

UPDATE2019-02-12
Data updated

ISSUE2019-02-07

Description du jeu de données
RésuméWARNING: Version V1 and V1_1 of these data were affected by errors in the development of the correction function to correct the absolute masses. This was corrected in version V2, so use this version for absolute masses. The relative mass fractions should be fine in all versions.

These are the particulate mass concentrations of organics, sulfate, nitrate and ammonium recorded by the Compact Time-of-Flight Aerosol Mass Spectrometer (C-ToF-AMS) in the MPI-C C-ToF-AMS rack on board of the DLR Falcon during the DACCIWA research flights.

NOTA BENE:Large particle losses occurred at the pressure-controlled inlet of this AMS at the lower flight altitudes. We corrected for this with an empirical, pressure-dependent function that was obtained from a comparison with estimated aerosol masses from the co-located OPC.
A more thorough description of the correction procedure will be provided in our upcoming publication (Batenburg et al., 2019). Kindly cite this paper when referring to these data.
These data are for standard (ground) pressure (1013.25 hPa) and temperature (273.15 K), like the corresponding OPC data.
Cloud passages are removed for the same time intervals as in the DLR OPC files. See those files for details.

Update for version V1_1: Detection limits were added. These were estimated by applying the cubic spline method described in Reitz (2011) (http://nbn-resolving.org/urn:nbn:de:hebis:77-28691) to the AMS closed signal in a moving-window fashion.
Update for version V2: Correction of errors found in the generation of the mass correction function.
RéférencesBatenburg et al., 2019 (in preparation), Drewnick, F., et al.,: A New Time-of-Flight Aerosol Mass Spectrometer (ToF-AMS) – Instrument Description and First Field Deployment, Aerosol Sci. Tech., 39, 637–658, 2005.
Description de l'instrument
Type d'instrumentIn Situ/Laboratory Instruments > Spectrometers/Radiometers > MASS SPECTROMETERS
FabricantAerodyne
Instrument features / CalibrationIonizarion Efficiency was determined with laboratory ammonium nitrate BFSP runs. Collection Efficiency was assumed to be 0.5. Mass losses at the pressure-controlled inlet were corrected with a function based on the co-located OPC data.
Observation frequencyvariable, <1 minute
Height above ground (m)13000
Information géographique
Site 1
Mot-clé de localistionCONTINENT > AFRICA > WESTERN AFRICA
SiteResearch flights from Lomé
Type de plateformeAIRCRAFT > DLR-FALCON 20
Paramètre mesuré
Nom du paramètrenon refractory submicrometric aerosol chemical composition
Mot-clé du paramètreAtmosphere > Aerosols > Aerosol Particle Properties
Unitémicrogramm per cubic meter - µg.m-3
Date de début (yyyy-mm-dd)2016-06-29Date de fin (yyyy-mm-dd)2016-07-14
Précision du capteur / Incertitude
Information sur l'utilisation des données
Conditions d'utilisation des donnéesPermission is granted to use these data in research and publications when accompanied by the following statement: "Data were obtained from the DACCIWA program which has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement 603502, as well as from internal funds of the Max Planck Institute for Chemistry in Mainz." A grant number for the MPI-C internal funds can be generated upon request.
Charte d'accès aux donnéesCreative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License
Base de donnéesDacciwa database
Format des fichiers de donnéesNASA Ames 1001